Type-writer paper-finger.



A. C. ROE BUCK.

TYPE WRITER PAPER FINGER.

APPLICATION FILED MAY 2!. 1915- 1,282,951 7 Patented Oct. 29 1918.

litvAIi oiionnuon, orwoonsrocK, I LInoIs, nssrenon 'IO woonsrocx rrrnwnrrnn COMPANY, orIWoonsrocn, IL'LIIIoIs, A CORPORATION or ILLINOIS.

TYPE-WRITER PAPER-FINGER.

Z '0 all whom itmay concern:

type generally known as upwardly extending paper fingers. The principal object of the invention is to provide a simple construction of the type described in which the paper finger. is rigidly but' yicldingly sup ported by the scale bar so that the upper end of the finger presses yieldingly against the platen.

Another object of the invention is to make a paper finger of this class which issimple inconstruction and economical to in anuiaeture and which is efl'ectiveand e'l'licient in operation.

Other objects of theinvention will appearhereinafter. p

In the drawings, Figure-1 is a view in elevation of a paper finger. applied to the shiftabl'e carriage of a typewriter and constructed in accordance with the principles of this'invention; Fig.2-is a sectional View taken onthe line 2 y 3 is a detail View showing the connection of the scale bar with the, typewriter carriage.

In some. typewriter constructions the paper fingers are supported fromabove and extend downwardly over the platen engaging the upper side of the paper on the platen or to hold the paper on the platen above the printing point. The present-construction relates to a paper finger which is supported below or in front of the platen thereby providing means for rigidly and securely holding the paperfinge as the paper finger extends upwardly with the roller at the upper end to bear yieldingly downward on the paper thereby securing more uniform pressure and holding the paper more firmly against the platen.

In the drawings the numeral 1 designates generally the frame or sub-carriage of a typewriter in which a platen 2 is'rotatably mounted, the end pieces of the frame 1 being secured together by means of bars 4 and 5 and by means of a scale bar 6 located at the front of the frame slightly below the axis of the platen 2. To this scale bar 6 2 of 1; and Fig.

Specification of Letters Patent.

Patented Got. 29, 1918.

Application filed May 21, 1915. Serial No. 29.458.

is secured a graduated scale 7 and the up per and lower front edges of the scale bar are provided with longitudinally extending grooves or recesses S. The scale bar ('5 is secured to the end of the frame 1 and held against rotation with respect thereto in an v desired manner, as for example by providing the inside of the end pieces with a recess 9 and inserting a screw 10 through the end piece into a threaded recess 11 at the end or the scale bar, the recess 9 preventing the bar-from rotating and the screw 10 holding the bar in position.

The paper finger proper comprises a single piece of material designated generally by the reference numeral 12 with slotted portions forming an internndiate spring finger 13. At the upper end the spring finger is formed with a finger-lm-ld portion 14 and with ears 15 bent outwardly forming a. bearing for a roller 16. The upper end of the paper fingerronforins generally to the curvature of the platen and the roller 16 bears against the platen adjacent the upper end ofthe paper finger. At its lower end the paper finger is formed with a. straight portion 17 which goes behindthe scale bar 6 and at the upper and lower end of the portion 17 are the forward projecting angular portions 18 and 19 which are adapted to engage .the longitudinal tront grooves 8 on the scale bar. At the lower end of the spring 13 which is formed into gral with the finger is a projection 20 which engages the rear of the bar 6 and yieldingly holds the spring finger in contact with the bar so that the angular portions 18 and 1.) car yieldingly against the barf; thereby holding the spring finger-in any position at which it may be set along the bar. The spring finger is placed onlhe bar before the bar isfastened to the frame 1 and may be slipped along the bar by simply springing the outer end of the finger away from the platen which will relieve the roller 16 from its engagement with the platen and will allow the finger to be moved freely along the bar to any position desired. It will be observed that the portion 17 of the finger at the rear side of the bar 6 stands away from the bar and is held inv position by the projection 20 of the spring proper. The introduction of paper between the platen and the spring finger will press the top part of the paper finger away from the platen, or, when the'operator wishes to adis pulled toward the operator to relieve it from pressure on the paper whereupon the finger 18 then shdable endwise upon the bar 6. There being space between the body of the finger and the top part of the scale bar permits of the finger being pulled toward the operator a considerable distance, in which case the angle forms a loop which moves forward at the same time. The paper finger being formed with a spring integral therewith very simple in construction and is therefore economical in manufacture, It is easy to adjust or remove the paper finger and there is nothing about it to get out of order. Being located at the front of the machine and on the scale bar the paper finger canbe set very quickly at any desired position along the scale.

Of course it is obvious that instead of making the paper finger and tongue integrally of a single piece of material, a spring tongue might be riveted or otherwise secured to the paper finger and accomplish the same result. Although others may make various changes in the construction without departing from the spirit and scope of the invention it is preferable to make the device of a single piece of material as described.

I claim:

1. In a typewriter, the combination with a'bar having a groove at its upper and lower edges on one side thereof, and a paper finger slidable thereon with a portion on the other side of the bar having hooks extending therefrom over the edges of the bar and engaging in the grooves.

2. In a typewriter, the combination with a bar having a groove at its upper and lower edges on the front side thereof with longitudinal graduations between the grooves,

and a slidable paper finger having hooks extending over the upper and lower edges from the rear of the bar and resting in the grooves so as to offer no obstruction to said graduations.

3. In a typewriter, the combination with a bar having a groove at its upper and lower edges on one side thereof, a paper finger slidable thereon with a portion on the other side of the bar having hooks extending therefrom over the edges of the bar and engaging in the grooves, andmeans for presslng the hooks yieldingly into the grooves.

4. In a typwriter, the combination with a graduated bar having grooves in the front face at the upper and lower edges thereof, of a paper finger slidable thereon having hooks extending over the upper and lower edges from the rear of the bar and resting in the grooves so that they. offer no obstruction to the graduations, and a spring tongue bearing against the back of the bar for pressing the hooks yieldingly into engagement with their respective grooves.

5. In a typewriter, the combination with a platen, of a scale bar located below and in front of it adjacent the' platen having longitudinal grooves on its forward edges, and

a paper finger having forward angular eX- tensions to engage the grooves from the rear thereof, and a spring tongue formed integral with the paper finger to hold the angular extensions yieldingly in the grooves and to hold the paper finger yieldingly against the platen.

6. In a typewriter, the combination with a platen, of a scale bar in front of but below the platen having longitudinal grooves at the upper and lower front edges, a graduated scale secured tothe front of the bar and a paper finger constructed of a single piece of material with angular portions extending from the back of the bar to engage the front grooves thereof, the top angular portion permitting an oscillation of the finger with re- ALVAH G. ROEBUGK.

Witnesses: p

L. E. HoUsn oLnnR, J. B. SWAHTSBEDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

